* {
  margin: 0;
  padding: 0;
}

body {
  background-color: rgb(241, 242, 246);
}
.clear:after{
    content: '';
    height: 0;
    display: block;
    clear: both;
}
.fl {
  float: left;
}
.fr {
  float: right;
}
.mt {
  margin-top: 10px;
}
.mb{
    margin-bottom: 10px;
}
.ml{
    margin-left: 10px;
}
.mr{
    margin-right: 10px;
}

::-webkit-scrollbar{
  display: none;
}

li {
  list-style: none;
}